Furniture-tread.



V. & S. J. VON DER UN.

FURNITURE mm) APPLICATION FILED NOV. 7 19l6.

Patente June 12, 1917.

' TUNJIT emnee PATENT enmenl V'ALENTINJE VON Mm LIN AND SIMON J. von DER LIN, DIE NEW YORK, IN. Y.

FURNITUBE-TREAD.

Sphoiflcatiionof Letters Patent. lPmhenihedl J 1111]I11 112, 11911"?.

Application filed November 7, 1916. Eierial No 129,920.

T0 all wlwm it mag; conoem:

Be it known that we, VALENTINE VON DER LIN und SIMON J. VON man LIN, both citizens of the United States, residing in the borough of Manhattan, city, county, .and State of New York, have invented. certain new and useful Improvements in Furniture- Trends, of which the following is a specification.

Our improvements relate to the t pe of furniture tread set forth in Letters of the United. States N6. 1,173,990, issued to us Feb. 29,- 1916, and des1gned to afiord a simple, cheap and efiective adjustable tread for application to the legs or Supports of tables or other articles of furniture Whereby variations in length of support o1 in equalities of .floor surface may be couveniently und expeditiously compensated for; our present invention relating particularly to the self-contained means of couneetion between tread end supporting post set forth in our concurrent application N0. 120,595, filed. Sept. 18, 1916, and being designed to adapt such means of connection to a. caster tread as Wall as 130 the inverteddome-shaped bread of seid patent anal seid concurrent application.

The invention consists in the specific' canstx-uction and arrangement of parts described and claimed herein, distinctiVe fea- Eures being the use of a reeessed stud by Which the screw post of the adjustable tread is attached. to the furniture,the recess in seid attachme1it-stud aceommodating the head and upper part of the coupling pin whichlimits the extent ofadjustment of the tread 011 seid screw post; und in t-he use of an annular dust guard flange which incloses the upper edge of the tread memher, conceals and protects the screw post, etc., all. es hereinafter fully sei: forth.

In the aec ompanying dmwings,

Figure 1, 1s an elevation of a tread of thecaster type mounted upon a furniture leg by.oun mmproved 'means of adjustment;

2, is a central vertical elevat1ofl thereofg' y Fig. 3, is a top view 0f the caster mount shown in Figs. 1, 2;

atent ment-stud Fig. 5, is an elevation of the lower end thereof;

Fig. (S, i's a view 0f the unde1 side of the post member;

Fig. 7, is a view of the upper side thereof;

Fig. 8, is a side elevation thereof;

Fig. 9, is in central vertieal sction of the lower part of the attachment-stud, the p0st member und the dust guard, the latter being shown as a piece separate from the post member;

Fig. 10, is a sectiona1elevation similar to Fig. 2, showirig the use of our improved means of adjustment in connection with a dome tread. y

In .adapting 0111 device for effecting vertical adjustment 130 a tread of the caster type it is desirable to confdrm t0 the usual method of securing a, caster tread inposition for use-by means of an attachment-stud, which is forced into a bore formed in the furniture leg or other support L.

For this reason we provide our hol1ow screw post B, with an .attachment-stud a, the lo-vver end of Which is formed with a peripheml serew thread a, f01' engagement with a screw thread b", formed for its reception in seid post member B ,-said 1ower extrernity 013 the attachment-stud a, being also formed with an axial recess a t0 accommodate the head 0 aridupper portion of the-coupling pin C. B, is the base 0f the hollow post B, the latter being formed with the peripheral thread b, for engugement With the screw thread t, formed in the hollow eu -shaped member T, to the Web t*, (Fig'i 2, of which is secured the trunnion T, upon which the caster bracket T ispivotally mounted,t', representing the actual tread for contacting wit-h the floor. In the form of-caster tread shown in the drawings anti-friction rollers are interposed between the web t", and the top of the caster bracket T but this is a mere detail of' construetion not 'pertinent t0 Ehe present invention, the only novelty in this respect consisting in forming a, screw thread 13 in the trunnion T, for the reception nfr" tha tliraadad and of the Coupling pin C, as shown in Fig. 2. Thus tha tread mambar T, and its supporting screw post B ara coupled togathar by tha axially positioned 'for anga,gemant with tha screw thraad t fonnad in tha trunnion T, of tha tread mamb ar T, Whila its uppar extramity is formad Wlth a haad 0 0f graater diameter than tha opaning Z, in tha lowar and of the hollow post B, through which tha coupling I'0d C, protrudas. Inother words, tha lower extremy of the scraw post B, is closed excapt for tha opening Z)", of lass diamatar than tha hollow mtarior b", of said post so as t0 form an annular rataining shoulder b", which, by contacting with tha haad 0, of the coupling r0d C, limits -izha dagrea of vertical adjustmant in ona diraction of the tread mambar T, upon tha screw post B, and at tha sama tima c onnacts tham parmanantly, in that 13116 traad mambar T, cannot ba ramovad from its supporting sareW post B, unlass tha coupling sarew C, ba first raxnovad, and this obviously cannot ba d0ne Whila tha attachin,g-stud a, is in engagamant with said screw post B.

By forming the haad 0 of tha aoupling pin C, with a nick or otherwisa providing fr its rotation, tha lowar and of thacoupling pin O, may, in tha absenca of tha attaehing stud a, be raadily Scrawacl more 01 lass into tl1a trunniou T theraby ragulating the distanca batwaan sai haad 0 and tha sh0ulder Z), at tl1a bottom of tha post B, and hance prascri-bing the axbant 'of adjustmant of the tread mamber T,-on said supporting pst B.

In ordar to concaal the arif haral threacl Z), of tha post B, and axc uda dust and extranaous matter wa provida said post B, With an annular dust g'u-ard flanga d, which ovarlaps 'cha uppar edga of tha traad membar and may ba formad directly on tha basa B, of said post, as in Figs. 2, and 10, or may ba 'formad with its own base d, as in Eig. 9.

In either case it afl'actually isolatas and protacts the screw thraads both from.dust and moistura, and. imparts a more finishad and symmatncal axtarnal appaaranca, Whila rainforcing and strengthaning tha device against lateral strain in u'sa.

By forming the recess a in tha lowar and oftha attachmant-stud a, for the accommodation of the haad 0 and upper portion of the c0upling pin C, wa ara anablad to afiact a simple, compact arrangamant of arts and lassen tha height or langth of the scraw post B; and in like manner tha scraw-tapping of' tha upper and of tha trunnion T for tha raception of'tha thraaded and of tl'1a coupling hollow post, and.an attaa .pin C, also economizes spaca an adapts nur maans of traad adjustment to castar traads. In this connection it may be notad that the trunniqn T, is (assentially a part of tha tread mambar T, baing parmanantly sa'curad tharato, so that the thraad t by angaging with the thraadad and of tha coupling scraw C, parforms the sama function whather formad in tha trunnion T, as in Fig. 2, 0r diractly in th traacl mamber T, as in Fig. 10.

In Fig. 10, wa hava 'shown our racassacl attachmant-stud a and dust guar d, as usad in connecti0n witl1 an invartad-doma traad, by which it will ba saan that tha principla is assantially tha same for both forms of traad, aithar fixad 01 rotatabla.

Tha screvv thraads a, 0n the attachingstud a, should be ravarsed in inclination to tha engaging scraw threads b, t, on tha post B, anal traad membar T, resp'activaly.

What wa claim as 011r invantion and dasi1a to sacura by Letters Patent is,

.1. Means :Eor attaching and. adjusting furnitura traads as herein sal: forth, comprising an intarnally scraw thraaad traacl membar, a hollow peripherall threadad which said traad mam er is acljusta la, said hollow post being formad w ith an inturnad shouldar, an axially positionad aoupling pin scrawing into tha traad member and axtending upward into said hollow supporting post and providad with a rataining haad opposadto said inturnad ratainin&{shouldar on the ant-stud scrawing into said; hollow post and formad witl1 an axial racass to accommoata tha rataining haad and uppar portion 0f saicl 'coupling p1 n. 4

2. Maans for atfiaching' and adljusting furnitura treads' as herein sei: forth, comprising an internally screw threaed tread membar, a hollow peripharally thraadad post an which saicl traad mambar is acljustable,saiol hollow post beim formed with an inturnad shouldar, an axia ly positionacl eoupling pin scrawing into the traad member and axl encling upward into said hollow supporting posl: and providad with a ratainin haad opposadl to said inturnad retaining s ouldar 011 tha hollow 0st, an attachmant-stucl scrawing into sai hollow post and formed with an axial raaass to accommoclata tha rataining haad and upper portion of said coupling pin, and an annular dustardl fianga ovar-lapping the uppar edga 0 tha tread membar, for tha purpose descr1bad.

' 3. Maans for attaching and adjusting furniture traads as herein sat forth comprising an internally screw-threadad traad member, a castar pivotally mountad on a trunhion securad to said traad-mambar, said trunnion, a hollow paripharally thraadad fost on which said tread membar is adj1'1stab e, said hollow 0st an b post being formed With an inturnedi shoul- .with an axial recess to accommodate the 1r eder, an axially positioned couplimg pin taining head and upper ortion of sa1dl 10 screwing into said caster trunnion and excoupl ing pin, for the purpose descr1bedl.

tending upward into said. hollow supporting VALENCILINE VON um L][N. 5 post and provided with a, retaining head. op- SMON J. VON um LHL posed to said inturned retaiuing shoulder on Witnesses':

said hollow post, and an attachment-stud FRANZ Smm, 2dl

screwing into said. hollow ost, and. formeu1 \EUGENE F. JANE. 

